Evidence is presented in support of the suggestion that a hovering bird is able to move between flowers more quickly than one that is perching. This advantage to hovering may be offset, however, by the higher energetic costs of hovering as compared with perching. This trade-off is evaluated in two field situations, one for perching honeyeaters and the other for hovering hummingbirds. In each case it is estimated that the birds employ the foraging mode (hovering versus perching) that results in the greatest net rate of energy gain.
|Number of pages||7|
|Publication status||Published - 1981|